Hi Product Hunt 👋

Every free online converter says "we don't keep your files." There's no way to check that. You hand over your passport scan or your lease and hope.

So I built toolbook: 100+ file tools that do all the work on your own computer or phone. Merge or compress PDFs, turn iPhone HEIC photos into JPGs, trim video, convert audio to MP3, pull text out of images, make QR codes and calendar invites, and plenty more.

The part I'm proudest of: every tool page has a live counter. While your file is being processed, it watches everything the page sends and shows you the total. It stays at 0 bytes. It only watches, it never blocks, so if anything ever did leave your device, you'd see it.

You don't have to trust the counter either. Open DevTools → Network, drop in a file, and watch. Outside of processing you'll see one cookieless analytics script (Plausible). It counts page views and which tool was used. It never records anything about your file.

A few other things:

• No signup, no watermarks, no file-size cap beyond your device's memory

• Install it as an app, and tools you've used keep working offline

• Video and audio use your browser's own built-in codecs, and OCR runs on a self-hosted engine, so nothing goes to a third-party service

• The AI tools (regex generator, PDF summariser) only use the AI model built into your browser, when it has one, and still work without it

I'd love to hear which tool you'd want next, and especially anything the counter misses.